Spektr-RG is anticipated to run an exceptionally detailed 6.5-year survey which could discover about 100,000 galaxy clusters, thousands and thousands of active celebrities and about 3 million supermassive black holes. Besides supplying a much more comprehensive map of the cosmos, it may help understand the supply of matter within the universe, the formation of black holes and the consequences of dark energy on cosmic expansion.
This is just really a landmark for astronomy. While the telescope final design fluctuates somewhat from the original concept and suffered multiple flaws, it puts Russia (and by extension, Germany) to the cutting edge of xray astronomy. While major discoveries have been produced by existing xray telescopes, they might not accomplish something.